You might want to call the manufacturer and ask them. I would feel comfortable using if it were me esp. since you don't have to worry about any bacteria or mold issues with it.
BTW, I have been using MMS2 for lingering congestion issues that are related to the chemtrail issue. I battled Morgellons for 3 years and now I am well. However, I still have fibers and bioflim issues my system has been able to keep under control so the fibers don't cause sores anymore and I don't have Morgellons symptoms now.
After using MMS2 the head/sinus issues with fibers has cleared up and I am very encouraged by this.
If you use it for something lik Lyme or Morgellons, build up very slowy since you can have a severe Herx reaction throughout your body.